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High risk for severe weather in the central, eastern US. Get the forecast details.

March megastorm: Blizzard, dangerous winds. Get the forecast.

Herculaneum, MO

67°F

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Herculaneum, MO Weather

Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center

Today WinterCast

Hourly

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WinterCast

Little to no accumulation

Sun, 3/15, 9:00 PM - Mon, 3/16, 6:00 AM

Snow

4 PM

65°

RealFeel® 59°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

63%

Thunderstorms

Tornado Watch

1:30 PM Sunday - 8:00 PM Sunday

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

RealFeel Shade™59°

WindS 21 mph

Air QualityPoor

Max UV Index0.6 (Low)

Wind Gusts33 mph

Humidity86%

Indoor Humidity78% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility3 mi

Cloud Ceiling1100 ft

5 PM

61°

RealFeel® 53°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

51%

Thunderstorms

Tornado Watch

1:30 PM Sunday - 8:00 PM Sunday

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

RealFeel Shade™53°

WindSSW 21 mph

Air QualityPoor

Max UV Index0.4 (Low)

Wind Gusts24 mph

Humidity84%

Indoor Humidity67% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.01 in

Visibility10 mi

Cloud Ceiling1100 ft

6 PM

55°

RealFeel® 42°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

58%

Thunderstorms

Tornado Watch

1:30 PM Sunday - 8:00 PM Sunday

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

RealFeel Shade™42°

WindWSW 18 mph

Air QualityPoor

Max UV Index0.1 (Low)

Wind Gusts30 mph

Humidity75%

Indoor Humidity48% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.30 in

Visibility3 mi

Cloud Ceiling1100 ft

7 PM

50°

RealFeel® 39°

Cold

RealFeel Guide

Cold

25° to 39°

Coats and hats are appropriate, consider gloves and a scarf.

49%

Cloudy

Tornado Watch

1:30 PM Sunday - 8:00 PM Sunday

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

RealFeel Shade™39°

WindW 18 mph

Air QualityPoor

Max UV Index0.0 (Low)

Wind Gusts35 mph

Humidity70%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling1100 ft

8 PM

47°

RealFeel® 34°

Cold

RealFeel Guide

Cold

25° to 39°

Coats and hats are appropriate, consider gloves and a scarf.

64%

Rain

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

WindW 17 mph

Air QualityFair

Wind Gusts32 mph

Humidity62%

Indoor Humidity43% (Slightly Dry)

Dew Point34° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.01 in

Visibility6 mi

Cloud Ceiling1400 ft

9 PM

42°

RealFeel® 27°

Cold

RealFeel Guide

Cold

25° to 39°

Coats and hats are appropriate, consider gloves and a scarf.

66%

Rain and snow

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

WindW 20 mph

Air QualityFair

Wind Gusts28 mph

Humidity67%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.01 in

Snowtrace

Visibility8 mi

Cloud Ceiling1800 ft

10 PM

39°

RealFeel® 23°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

65%

Rain and snow

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

WindW 21 mph

Air QualityFair

Wind Gusts25 mph

Humidity68%

Indoor Humidity38% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.01 in

Snowtrace

Visibility6 mi

Cloud Ceiling2100 ft

11 PM

38°

RealFeel® 22°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

40%

Cloudy

Wind Advisory

10:00 AM Sunday - 12:00 PM Monday

WindW 21 mph

Air QualityPoor

Wind Gusts25 mph

Humidity68%

Indoor Humidity37% (Dry)

Dew Point28° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2100 ft

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World North America United States Missouri Herculaneum

Weather Near Herculaneum:

O'Fallon, MO
St. Charles, MO
St. Louis, MO

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